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  • DSC  (107)
  • Fisheries
  • General Chemistry
  • Theoretical, Physical and Computational Chemistry
  • Springer  (109)
  • 1995-1999  (109)
  • 1945-1949
  • 1940-1944
  • 1997  (59)
  • 1996  (50)
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  • 1995-1999  (109)
  • 1945-1949
  • 1940-1944
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  • 101
    Digitale Medien
    Digitale Medien
    Characterization of thermomechanical properties in starch and cereal products (1996)
    Springer
    Journal of thermal analysis and calorimetry 47 (1996), S. 195-213 
    Details
    ISSN: 1572-8943
    Schlagwort(e): DMA ; DSC ; rheological impacts ; thermomechanical properties
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Notizen: Abstract Thermomechanical properties of bread components can be used to characterize various events that have direct rheological impacts. The objective is to observe changes that occur during staling and toughening of a bread or similar products. In this article, characterization of bread polymers, starch and gluten, were examined by differential scanning calorimetry (DSC) and dynamic mechanical analysis (DMA).
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01982699
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  • 102
    Digitale Medien
    Digitale Medien
    Measurement of heterogeneously catalyzed gas reactions by DSC (1996)
    Springer
    Journal of thermal analysis and calorimetry 47 (1996), S. 445-452 
    Details
    ISSN: 1572-8943
    Schlagwort(e): catalysts ; catalyst activity ; catalyst deactivation ; DSC ; gas reactions ; kinetics
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Notizen: Abstract Gas reactions, catalyzed by solid catalysts, can be measured by DSC. In the experimental set-up an open sample pan with catalyst (powder or pellet) is placed on the sample side of the DSC sensor. The reactive gas mixture flows through the cell and reacts on the catalyst surface. The heat effect, caused by this reaction, results into a DSC signal. The calibration procedure is described for quantitative evaluation of the DSC measurements. For illustration four different reaction systems are discussed.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01983986
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  • 103
    Digitale Medien
    Digitale Medien
    Internal flexibility of cardiac myosins (1996)
    Springer
    Journal of thermal analysis and calorimetry 47 (1996), S. 503-514 
    Details
    ISSN: 1572-8943
    Schlagwort(e): cardiac myosin ; DSC ; flexibility of myosin heads ; spin-labelling
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Notizen: Abstract Conventional and saturation transfer electron paramagnetic resonance spectroscopy (EPR and ST EPR) and differential scanning calorimetry (DSC) were used to study the motional dynamics and segmental flexibility of cardiac myosins. Cardiac myosins isolated from bovine and human heart muscle were spin-labelled with isothiocyanate- or maleimide-based probe molecules at the reactive sulfhydryl sites (Cys-697 and Cys-707) of the motor domain. The maleimide probe molecules attached to human cardiac myosin rotated with an effective rotational correlation time of 33 ns which was at least eight times shorter than the rotational correlation time of the same label on skeletal myosin (260 ns). In the presence of MgADP and MgADP plus orthovanadate, flexibility changes in the multisubunit structure of myosins were detected, but this did not lead to changes of the overall rotational property of the myosin heads. Significant difference in the internal flexibility was detected on myosin samples isolated from ischemic tissue, the rotational correlation time decreased to 25 ns. DSC measurements supported the view that addition of nucleotides produced additional loosening in the multisubunit structure of cardiac myosin. It is postulated that there is an intersite communication between the nucleotide binding domain and the 20 kDa subunit where the reactive thiol sites are located.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01983992
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  • 104
    Digitale Medien
    Digitale Medien
    Thermal analysis of hydrated calcium aluminates (1996)
    Springer
    Journal of thermal analysis and calorimetry 47 (1996), S. 765-774 
    Details
    ISSN: 1572-8943
    Schlagwort(e): calcium aluminates ; cement ; DSC
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Notizen: Abstract Differential scanning calorimeter (DSC) has been used to study the dehydration characteristics of hydrated calcium aluminates such as CA, CA2 and C12A7 where C and A stand for CaO and Al2O3 respectively. Dehydration of CAH10 and C2AH8 (whereH=H2O) occur ∼ at 160–180°C and 200–280°C respectively. These two phases are unstable and ultimately get transformed to AH3 and C3AH6. Dehydration of AH3 and C3AH6 occur between 290 and 350°C and overlap at lower scanning rate. The activation energy for dehydration of the stable AH3 and C2AH6 phases has been found to be 107.16 and 35.58 kJ mol−1 respectively. The compressive strength of the hydrated calcium aluminates has been determined. The result shows that in the case of CA, almost 90% of ultimate strength has been attained in 1 day whereas in CA2, ultimate strength has been attained in 14 days and in C12A7 in 1 day. DSC results have been correlated with the rate of strength developments.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01981812
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  • 105
    Digitale Medien
    Digitale Medien
    Caracterisation par analyse calorimetrique differentielle des complexes entre LiAlH4 et les ethers-couronnes 12-C-4, 15-C-5, dicyclohexano-18-C-6 (1996)
    Springer
    Journal of thermal analysis and calorimetry 47 (1996), S. 833-846 
    Details
    ISSN: 1572-8943
    Schlagwort(e): crown-ethers (CE) ; 12-C-4 ; 15-C-5 ; DC 18-C-6anti ; DC 18-C-6syn ; DSC ; LiAlH4-CE complexes ; glass-transition ; solvates
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Notizen: Abstract The thermal behaviour of complexes [Li+-EC](AlH4)− withEC=12-C-4, 15-C-5, DC 18-C-6 (cis-anti-cis andcis-syn-cis isomers) was investigated by Differential Scanning Calorimetry (DSC). These complexes were prepared as solids from benzene solutions. Pure EC and several solvated species [Li+-EC](AlH4)−·nC6H6 (EC=15-C-5, DC 18-C-6syn) were also studied. DSC has revealed various phenomena. Solid-solid transitions were observed before melting for [Li+-EC](AlH4)− withEC=12-C-4 and 15-C-5. They are probably explained by small molecular modifications strongly dependent on the thermal history of the sample. A glass-transition was found for the pure crown-ether DC 18-C-6anti, the complex [Li+-EC](A1H4)− withEC=DC-18-C-6anti and the two solvates mentioned above.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01981818
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  • 106
    Digitale Medien
    Digitale Medien
    The glass transition (1996)
    Springer
    Journal of thermal analysis and calorimetry 47 (1996), S. 887-896 
    Details
    ISSN: 1572-8943
    Schlagwort(e): compensation temperature ; DSC ; fictive temperature ; poly(ethylene terephthalate) ; thermally stimulated depolarization current
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Notizen: Abstract This work deals with a comparison of data obtained from differential scanning calorimetry (DSC) and thermally stimulated depolarization current (TSDC) investigations. Measurements were performed on various poly(ethylene terephthalate) films: a wholly amorphous, a thermally crystallized and drawn samples. For each specimen, the TSDC complex spectra, resolved into elementary ones, led to the determination of the classical compensation temperature (T c ). The glass transition temperature (T g) and the fictive equilibrium temperature (T f) were determined by means of DSC. It appears thatT c is different fromT g and very close toT f.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01981823
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  • 107
    Digitale Medien
    Digitale Medien
    Isothermal melt crystallization kinetics of poly(L-lactic acid) (1996)
    Springer
    Journal of thermal analysis and calorimetry 47 (1996), S. 931-939 
    Details
    ISSN: 1572-8943
    Schlagwort(e): DSC ; isothermal melt crystallization ; kinetic parameters ; Mathematica® ; new kinetic model ; poly(L-lactic acid)
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Notizen: Abstract A DSC study was carried out of the isothermal melt crystallization kinetics of poly(L-lactic acid), PLLA, at 110, 115, 120, 125 and 130
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01979440
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  • 108
    Digitale Medien
    Digitale Medien
    Fish communities in the African Great Lakes (1996)
    Springer
    Environmental biology of fishes 45 (1996), S. 219-235 
    Details
    ISSN: 1573-5133
    Schlagwort(e): Ecology ; Behaviour ; Evolution ; Cichlids ; Fisheries ; Conservation
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Synopsis Ecological conditions in tropical lacustrine systems are considered by focusing on the evolution, maintenance, exploitation and vulnerability of fish communities in the African Great Lakes. The exceptionally high biodiversities in the littoral/sublittoral zones of the very ancient, deep, clear, permanently stratified rift lakes Tanganyika and Malawi, are contrasted with the simpler systems in their pelagic zones, also with biodiversity in the much younger, shallower Victoria, the world's largest tropical lake.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00003090
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  • 109
    Digitale Medien
    Digitale Medien
    The interaction of biliar acids with 2-hydroxypropyl-β-cyclodextrin in solution and in the solid state (1996)
    Springer
    Journal of inclusion phenomena and macrocyclic chemistry 26 (1996), S. 233-241 
    Details
    ISSN: 1573-1111
    Schlagwort(e): Biliar acid ; 2-hydroxypropyl-β-cyclodextrin ; interaction studies ; IR ; NMR ; DSC ; XRD
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Notizen: Abstract The interaction of two biliar acids (chenodeoxycholic acid and cholic acid) with 2-hydroxypropyl-β-cyclodextrin (HPβCD) in solution and in the solid state was studied using different techniques. The formation of an inclusion complex with a 1:1 stoichiometry was suggested by the phase solubility studies. Both differential scanning calorimetry and X-ray diffractometry exhibited the amorphous state of the complex. The inclusion of both biliar acids into the HPβCD cavity was confirmed by the13C-NMR studies. Cholic acid showed a weaker affinity with respect to chenodeoxycholic acid probably owing to the presence of a hydroxyl group onC(12) (12α) close to the complexation site.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01053541
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